No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Expired in Period, Weighted Average Grant Date Fair Value

+ References

No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Expirations in Period

+ References

No definition available.

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
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- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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-Publisher FASB
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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Section 50
-Paragraph 2
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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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-Publisher FASB
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- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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STOCK PLANS - Restricted Shares and Restricted Stock Unit Activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Restricted Stock and Restricted Stock Units
Outstanding at beginning of year (in shares)	841,610
Expired (in shares)	0
Outstanding at end of year (in shares)	725,252	841,610
Restricted Stock And Restricted Stock Units
Restricted Stock and Restricted Stock Units
Granted (in shares)	511,785	548,301	586,141
Weighted-Average Fair Value
Granted (in usd per share)	$ 13.87	$ 10.63	$ 12.03
Restricted Stock And Restricted Stock Units \| Cliff - Subject to service conditions
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Period	3 years		3 years
Restricted Stock and Restricted Stock Units
Granted (in shares)	223,988	277,250	283,000
Weighted-Average Fair Value
Granted (in usd per share)	$ 21.21	$ 22.80	$ 18.69
Restricted Stock And Restricted Stock Units \| Cliff - Subject to service conditions \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Period		3 years
Restricted Stock And Restricted Stock Units \| Cliff - Subject to service conditions \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Period	4 years
Restricted Stock And Restricted Stock Units \| Graded - Subject to service conditions
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Period	3 years	3 years	3 years
Restricted Stock and Restricted Stock Units
Granted (in shares)	37,788	24,488	30,632
Weighted-Average Fair Value
Granted (in usd per share)	$ 19.89	$ 22.87	$ 18.28
Restricted Stock And Restricted Stock Units \| Cliff - Subject to service and performance conditions
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Period	3 years	3 years	3 years
Restricted Stock and Restricted Stock Units
Granted (in shares)		147,938	163,509
Weighted-Average Fair Value
Granted (in usd per share)		$ 22.77	$ 18.81
Restricted Stock And Restricted Stock Units \| Cliff - Subject to service and market conditions
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Period	3 years	3 years	3 years
Restricted Stock and Restricted Stock Units
Granted (in shares)		98,625	109,000
Weighted-Average Fair Value
Granted (in usd per share)		$ 10.63	$ 12.03
Restricted Stock
Restricted Stock and Restricted Stock Units
Outstanding at beginning of year (in shares)	841,610
Granted (in shares)	261,776
Forfeited (in shares)	(20,940)
Vested (in shares)	(357,194)
Outstanding at end of year (in shares)	725,252	841,610
Weighted-Average Fair Value
Outstanding at beginning of year (in usd per share)	$ 20.41
Granted (in usd per share)	21.02
Forfeited (in usd per share)	22.01
Vested (in usd per share)	19.62
Outstanding at end of year (in usd per share)	$ 21.03	$ 20.41
Restricted Stock Units (RSUs)
Restricted Stock and Restricted Stock Units
Outstanding at beginning of year (in shares)	15,000
Granted (in shares)	0
Forfeited (in shares)	0
Vested (in shares)	(15,000)
Expired (in shares)	0
Outstanding at end of year (in shares)	0	15,000
Weighted-Average Fair Value
Outstanding at beginning of year (in usd per share)	$ 14.04
Granted (in usd per share)	0.00
Forfeited (in usd per share)	0.00
Vested (in usd per share)	14.04
Expired (in usd per share)	0.00
Outstanding at end of year (in usd per share)	$ 0.00	$ 14.04
Restricted Stock Units, Performance Based
Restricted Stock and Restricted Stock Units
Outstanding at beginning of year (in shares)	327,486
Forfeited (in shares)	(16,270)
Vested (in shares)	(55,921)
Outstanding at end of year (in shares)	405,304	327,486
Weighted-Average Fair Value
Outstanding at beginning of year (in usd per share)	$ 20.44
Forfeited (in usd per share)	20.05
Vested (in usd per share)	21.21
Expired (in usd per share)	0.00
Outstanding at end of year (in usd per share)	$ 20.92	$ 20.44
Restricted Stock Units, Performance Based \| Cliff - Subject to service and performance conditions
Restricted Stock and Restricted Stock Units
Granted (in shares)	150,009
Weighted-Average Fair Value
Granted (in usd per share)	$ 21.20
Restricted Stock Units, Market Based
Restricted Stock and Restricted Stock Units
Outstanding at beginning of year (in shares)	236,708
Forfeited (in shares)	(10,845)
Vested (in shares)	(503)
Expired (in shares)	(55,163)
Outstanding at end of year (in shares)	270,197	236,708
Weighted-Average Fair Value
Outstanding at beginning of year (in usd per share)	$ 12.46
Forfeited (in usd per share)	11.84
Vested (in usd per share)	11.80
Expired (in usd per share)	14.88
Outstanding at end of year (in usd per share)	$ 12.46	$ 12.46
Restricted Stock Units, Market Based \| Cliff - Subject to service and market conditions
Restricted Stock and Restricted Stock Units
Granted (in shares)	100,000
Weighted-Average Fair Value
Granted (in usd per share)	$ 13.87